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https://www.readbyqxmd.com/read/28528438/herpes-simplex-virus-membrane-fusion
#1
Darin J Weed, Anthony V Nicola
Herpes simplex virus mediates multiple distinct fusion events during infection. HSV entry is initiated by fusion of the viral envelope with either the limiting membrane of a host cell endocytic compartment or the plasma membrane. In the infected cell during viral assembly, immature, enveloped HSV particles in the perinuclear space fuse with the outer nuclear membrane in a process termed de-envelopment. A cell infected with some strains of HSV with defined mutations spread to neighboring cells by a fusion event called syncytium formation...
2017: Advances in Anatomy, Embryology, and Cell Biology
https://www.readbyqxmd.com/read/28526984/reduced-weed-seed-shattering-by-silencing-a-cultivated-rice-gene-strategic-mitigation-for-escaped-transgenes
#2
Huanxin Yan, Lei Li, Ping Liu, Xiaoqi Jiang, Lei Wang, Jia Fang, Zhimin Lin, Feng Wang, Jun Su, Bao-Rong Lu
Transgene flow form a genetically engineered (GE) crop to its wild relatives may result in unwanted environmental consequences. Mitigating transgenes via introducing a gene that is disadvantageous to wild relatives but beneficial to crops, and is tightly-linked with the target transgenes, may provide a promising solution to limit the spread of transgenes in wild/weedy populations. Here we demonstrate a novel system with significantly reduced seed shattering in crop-weed hybrid descendants by partially silenced expression of the seed-shattering gene SH4 in cultivated rice, using artificial microRNA and antisense RNA techniques...
May 19, 2017: Transgenic Research
https://www.readbyqxmd.com/read/28524089/green-synthesized-zinc-oxide-zno-nanoparticles-induce-oxidative-stress-and-dna-damage-in-lathyrus-sativus-l-root-bioassay-system
#3
Kamal K Panda, Dambaru Golari, A Venugopal, V Mohan M Achary, Ganngam Phaomei, Narasimham L Parinandi, Hrushi K Sahu, Brahma B Panda
Zinc oxide nanoparticles (ZnONP-GS) were synthesised from the precursor zinc acetate (Zn(CH₃COO)₂) through the green route using the milky latex from milk weed (Calotropis gigantea L. R. Br) by alkaline precipitation. Formation of the ZnONP-GS was monitored by UV-visible spectroscopy followed by characterization and confirmation by energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), and X-ray diffraction (XRD). Both the ZnONP-GS and the commercially available ZnONP-S (Sigma-Aldrich) and cationic Zn(2+) from Zn(CH₃COO)₂ were tested in a dose range of 0-100 mg·L(-1) for their potency (i) to induce oxidative stress as measured by the generation reactive oxygen species (ROS: O₂(•-), H₂O₂ and (•)OH), cell death, and lipid peroxidation; (ii) to modulate the activities of antioxidant enzymes: catalase (CAT), superoxide dismutase (SOD), guaiacol peroxidase (GPX), and ascorbate peroxidase (APX); and (iii) to cause DNA damage as determined by Comet assay in Lathyrus sativus L...
May 18, 2017: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28516406/degradation-and-adsorption-of-tralkoxydim-in-chinese-soils-and-water-sediment-environments
#4
Wen Zhu Wu, Zheng Jun Shan, De Yang Kong, Jian He
Tralkoxydim is a cyclohexanedione herbicide primarily used for gramineous weed control in China. In this paper, we present results of a tralkoxydim laboratory environmental fate study characterizing its degradation, adsorption, and mobility behavior in three different soils and two water-sediment systems (river and lake) in China. Degradation half-life of tralkoxydim in soil under aerobic conditions was 5.1, 7.7, and 7.9 days in Jiangxi red soil, Taihu paddy soil, and Northeast China black soil, respectively...
June 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28503777/determination-of-threshold-concentrations-of-plant-pollens-in-intradermal-testing-using-fluorescein-in-clinically-healthy-nonallergic-cats
#5
Fiona M Scholz, Amanda K Burrows, Craig E Griffin, Russell Muse
BACKGROUND: Currently the same allergen concentrations for canine intradermal testing (IDT) are recommended for feline IDT. Feline skin reactions are subtle and more difficult to read than canine reactions. This difference may be due to suboptimal allergen concentrations used for IDT in cats. HYPOTHESIS/OBJECTIVES: To determine the irritant threshold concentration (ITC) of 16 pollen allergens using serial dilutions of allergen and intravenous fluorescein. The hypothesis tested was that feline IDT currently is performed at suboptimal allergen concentrations for pollens...
May 14, 2017: Veterinary Dermatology
https://www.readbyqxmd.com/read/28503052/wound-healing-property-review-of-siam-weed-chromolaena-odorata
#6
REVIEW
Anushika Sirinthipaporn, Wannee Jiraungkoorskul
Chromolaena odorata (Family: Asteraceae) synonyms as Eupatorium odoratum is a traditional medicinal plant that is widely used for its wound healing property. In particular, the several parts of this herb have been used to treat wounds, burns, and skin infections. Furthermore, it has also been shown to possess anticancer, antidiabetic, anti-hepatotoxic, anti-inflammatory, antimicrobial, and antioxidant properties. Its phytochemical components are alkaloids, flavonoids, flavanone, essential oils, phenolics, saponins, tannins, and terpenoids...
January 2017: Pharmacognosy Reviews
https://www.readbyqxmd.com/read/28501382/fabrication-of-biochars-obtained-from-valorization-of-biowaste-and-evaluation-of-its-physicochemical-properties
#7
Rumi Narzari, Neonjyoti Bordoloi, Banashree Sarma, Lina Gogoi, Nirmali Gogoi, Bikram Borkotoki, Rupam Kataki
This study investigated the yields and the physicochemical properties of biochar from three different feedstocks viz., i) bioenergy byproducts (deoiled cakes of Jatropha carcus and Pongamia glabra), ii) lignocellulose biomass (Jatropha carcus seed cover), and iii) a noxious weed (Parthenium hysterophorus), obtained through slow pyrolysis at a heating rate of 40°Cmin(-1) with a nitrogen flow 100mlmin(-1) at a temperature range of 350-650°C. For successful utilization of biochar for C-sequestration, its ability to resist abiotic or biotic degradation was deduced from recalcitrance index R50 by using TG analysis...
April 16, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28499265/nanoagroparticles-emerging-trends-and-future-prospect-in-modern-agriculture-system
#8
REVIEW
Syed Baker, Tatiana Volova, Svetlana V Prudnikova, S Satish, Nagendra Prasad M N
Increment of technical knowledge has remarkably uplifted logical thinking among scientific communities to shape the theoretical concepts into near product-oriented research. The concept of nanotechnology has overwhelmed almost all forms of lives and has traded its applications in myriad fields. Despite rapid expansion of nanotechnology, sustainable competitions still do exist in the field of agriculture. In current scenario, agriculture is a manifestation demand to provide adequate nutrition for relentless growing global population...
April 23, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28497296/preferential-flow-characteristics-of-reclaimed-mine-soils-in-a-surface-coal-mine-dump
#9
Lv Gang, Li Jun, Li Yexin, Wang Ting, Liu Yazhuo, Fu Xinyang
There are a large number of macropores/tubular channels of a few centimeters and plant roots in reclaimed dump soils, which are the main reasons for the formation of soil macropores and soil preferential flow. To systematically study the morphological characteristics and variation of soil preferential flow for different reclaimed vegetations in a dump, a dye-staining experiment and physical and chemical analysis were carried out to investigate the formation mechanism and influencing factors of soil preferential flow in the vegetation restoration process...
June 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28494649/herbicidal-activity-of-pure-compound-isolated-from-rhizosphere-inhabiting-aspergillus-flavus
#10
Saeed Ullah Khattak, Ghosia Lutfullah, Zafar Iqbal, Irshad Ur Rehman, Jamshaid Ahmad, Abid Ali Khan
In the quest for bioactive natural products of fungal origin, Aspergillus flavus was isolated from rhizosphere of Mentha piperita using Potato Dextrose Agar (PDA) and Czapec Yeast Broth (CYB) nutrient media for metabolites production. In total, three different metabolites were purified using HPLC/LCMS and the structures were established using 500 Varian NMR experiments. Further the isolated metabolites in different concentrations (10, 100, 1000 μg/mL) were tested for herbicidal activity using Completely Randomized design (CRD) against the seeds of Silybum marianum and Avena fatua which are major threats to wheat crop in Pakistan...
May 11, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28492504/optical-sensing-to-determine-tomato-plant-spacing-for-precise-agrochemical-application-two-scenarios
#11
Jorge Martínez-Guanter, Miguel Garrido-Izard, Constantino Valero, David C Slaughter, Manuel Pérez-Ruiz
The feasibility of automated individual crop plant care in vegetable crop fields has increased, resulting in improved efficiency and economic benefits. A systems-based approach is a key feature in the engineering design of mechanization that incorporates precision sensing techniques. The objective of this study was to design new sensing capabilities to measure crop plant spacing under different test conditions (California, USA and Andalucía, Spain). For this study, three different types of optical sensors were used: an optical light-beam sensor (880 nm), a Light Detection and Ranging (LiDAR) sensor (905 nm), and an RGB camera...
May 11, 2017: Sensors
https://www.readbyqxmd.com/read/28488146/ecological-and-agriculture-impacts-of-bakery-yeast-wastewater-use-on-weed-communities-and-crops-in-an-arid-environment
#12
Mohammed H Abu-Dieyeh, Mahmoud Diab, Mohammad A Al-Ghouti
The goal of this study was to evaluate the impact of using yeast wastewater (YW) on weed communities. The study showed that all ecological parameters including species richness, dispersion, density, frequency, and % of vegetation cover were significantly increased in the site irrigated with YW compared to a natural rain fed site and another site irrigated with fresh water. The vegetation cover (%) was significantly increased by 2-folds in the site irrigated with YW (52%) than the one irrigated with fresh water (27%)...
May 9, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28485118/relationship-between-weed-dormancy-and-herbicide-rotations-implications-in-resistance-evolution
#13
REVIEW
Henri Darmency, Nathalie Colbach, Valérie Le Corre
It was suggested that selection for late germinating seed cohorts is significantly associated to herbicide-resistance in some cropping systems. In turn, it is conceivable that rotating herbicide modes of action selects for populations with mutations for increased secondary dormancy, thus partially overcoming the delaying effect of rotation on resistance evolution. Modified seed dormancy could affect management strategies-like herbicide rotation-that are used to prevent or control herbicide-resistance. Here, we review literature for data on seed dormancy and germination dynamics of herbicide-resistant versus susceptible plants...
May 9, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28484980/biological-control-of-broad-leaved-dock-infestation-in-wheat-using-plant-antagonistic-bacteria-under-field-conditions
#14
Tasawar Abbas, Zahir Ahmad Zahir, Muhammad Naveed, Zubair Aslam
Conventional weed management systems have produced many harmful effects on weed ecology, human health and environment. Biological control of invasive weeds may be helpful to minimize these harmful effects and economic losses incurred to crops by weeds. In our earlier studies, plant antagonistic bacteria were obtained after screening a large number of rhizobacteria for production of phytotoxic substances and effects on wheat and its associated weeds under laboratory conditions. In this study, five efficient strains inhibitory to broad-leaved dock and non-inhibitory to wheat were selected and applied to broad-leaved dock co-seeded with wheat both in pot trial and chronically infested field trial...
May 8, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28482306/mapping-allergenic-pollen-vegetation-in-uk-to-study-environmental-exposure-and-human-health
#15
Rachel N McInnes, Deborah Hemming, Peter Burgess, Donna Lyndsay, Nicholas J Osborne, Carsten Ambelas Skjøth, Sam Thomas, Sotiris Vardoulakis
Allergenic pollen is produced by the flowers of a number of trees, grasses and weeds found throughout the UK. Exposure to such pollen grains can exacerbate pollen-related asthma and allergenic conditions such as allergic rhinitis (hay fever). Maps showing the location of these allergenic taxa have many applications: they can be used to provide advice on risk assessments; combined with health data to inform research on health impacts such as respiratory hospital admissions; combined with weather data to improve pollen forecasting systems; or as inputs to pollen emission models...
May 5, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28480649/regional-difference-of-causative-pollen-in-children-with-allergic-rhinitis
#16
Myongsoon Sung, Sung Won Kim, Jeong Hee Kim, Dae Hyun Lim
The aim of this study was to investigate role of common pollen in Korean school-aged children with allergic rhinitis (AR) in 5 provinces (Incheon Metropolitan City-Gyeonggi Province, Chungcheongbuk-do, Gwangju Metropolitan City, Busan Metropolitan City, and Jeju Special Self-Governing Province), using a questionnaire and skin prick test, and to assess the differences among the residential regions. Among the enrolled 14,678 total children, 1,641 (22.0%) had AR. The sensitization rate to pollen (38.7%) was the second highest among examined allergens and significant differences were in the sensitization rates to trees, weeds, and grasses among the 5 provinces (P < 0...
June 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28469287/using-simulation-models-to-investigate-the-cumulative-effects-of-sowing-rate-sowing-date-and-cultivar-choice-on-weed-competition
#17
Izzadora K S Andrew, Jonathan Storkey
With the increasing pressure on crop production from the evolution of herbicide resistance, farmers are increasingly adopting Integrated Weed Management (IWM) strategies to augment their weed control. These include measures to increase the competitiveness of the crop canopy such as increased sowing rate and the use of more competitive cultivars. While there are data on the relative impact of these non-chemical weed control methods assessed in isolation, there is uncertainty about their combined contribution, which may be hindering their adoption...
May 2017: Crop Protection
https://www.readbyqxmd.com/read/28462700/fungal-phytotoxins-in-sustainable-weed-management
#18
Maurizio Vurro, Angela Boari, Francesca Casella, Maria Chiara Zonno
Fungal phytotoxins are natural secondary metabolites produced by plant pathogenic fungi during host-pathogen interactions. They have received considerable particular attention for elucidating disease etiology, and consequently to design strategies for disease control. Due to wide differences in their chemical structures, these toxic metabolites have different ecological and environmental roles and mechanisms of action. This review aims at summarizing the studies on the possible use of thesemetabolites as tools in biological and integrated weed management, e...
April 26, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28461732/genetically-transformed-tobacco-plants-expressing-synthetic-epsps-gene-confer-tolerance-against-glyphosate-herbicide
#19
Muhammad Imran, Shaheen Asad, Andre Luiz Barboza, Esteban Galeano, Helaine Carrer, Zahid Mukhtar
Glyphosate quashes the synthesis of 5-enolpyruvylshikimate-3- phosphate synthase (EPSPS) enzyme which intercedes the functioning of shikimate pathway for the production of aromatic amino acids. Herbicide resistant crops are developed using glyphosate insensitive EPSPS gene isolated from Agrobacterium sp. strain CP4, which give farmers a sustainable weed control option. Intentions behind this study were to design and characterize the synthetic herbicide resistant CP4-EPSPS gene in a model plant system and check the effectiveness of transformed tobacco against application of glyphosate...
April 2017: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
https://www.readbyqxmd.com/read/28456300/isoxadifen-safening-mechanism-in-sweet-corn-genotypes-with-differential-response-to-p450-metabolized-herbicides
#20
Amit Paporisch, Baruch Rubin
Three sweet corn genotypes, two inbred lines (IBER001 and IBER002) and their hybrid (ER00X), differ in their phenotypic responses to several P450-metabolized herbicides, used in sweet corn, namely, foramsulfuron, iodosulfuron, rimsulfuron and tembotrione. Foramsulfuron is a sulfonylurea herbicide commonly formulated with the safener isoxadifen that is used for selective post-emergence weed control in corn. Our goal was to elucidate the mechanism of these genotypes' responses to foramsulfuron and safener isoxadifen and examine the heritability of those responses...
May 2017: Pesticide Biochemistry and Physiology
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